ES8702186A1 - Improved mandrel having an Eddy Current probe. - Google Patents

Improved mandrel having an Eddy Current probe.

Info

Publication number
ES8702186A1
ES8702186A1 ES539069A ES539069A ES8702186A1 ES 8702186 A1 ES8702186 A1 ES 8702186A1 ES 539069 A ES539069 A ES 539069A ES 539069 A ES539069 A ES 539069A ES 8702186 A1 ES8702186 A1 ES 8702186A1
Authority
ES
Spain
Prior art keywords
mandrel
probe
eddy current
thickness
baffle plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES539069A
Other languages
Spanish (es)
Other versions
ES539069A0 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/567,102 external-priority patent/US4649492A/en
Priority claimed from US06/567,107 external-priority patent/US4586249A/en
Priority claimed from US06/567,104 external-priority patent/US4649493A/en
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES539069A0 publication Critical patent/ES539069A0/en
Publication of ES8702186A1 publication Critical patent/ES8702186A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
    • C21D7/12—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

An improved fluid mandrel having an eddy current probe generally comprises a probe body which is detachably connectable to the bottom of a fluid mandrel on one end, and a source of hydraulic fluid on the other end. The probe body includes a pair of sensing coils which are separated along the longitudinal axis of the body by a distance approximately equal to the thickness of the metallic structure desired to be detected. The invention finds application in performing expansions which eliminate the clearance, e.g., by interference fit, between heat exchange tubes extending through the baffle plates in nuclear steam generators the sensing coils of the probe are longitudinally spaced the same distance as the thickness of the baffle plates in order to generate a sharp and unambiguous electronic signal indicative of the relative positions of the mandrel and the baffle plate. Also disclosed is a method of controlling the expansion swaging force considering the tube material properties.
ES539069A 1983-12-30 1984-12-26 Improved mandrel having an Eddy Current probe. Expired ES8702186A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/567,102 US4649492A (en) 1983-12-30 1983-12-30 Tube expansion process
US06/567,107 US4586249A (en) 1983-12-30 1983-12-30 Mandrel having an eddy current probe
US06/567,104 US4649493A (en) 1983-12-30 1983-12-30 Tube expansion apparatus

Publications (2)

Publication Number Publication Date
ES539069A0 ES539069A0 (en) 1986-12-16
ES8702186A1 true ES8702186A1 (en) 1986-12-16

Family

ID=27416010

Family Applications (1)

Application Number Title Priority Date Filing Date
ES539069A Expired ES8702186A1 (en) 1983-12-30 1984-12-26 Improved mandrel having an Eddy Current probe.

Country Status (3)

Country Link
EP (1) EP0148454B1 (en)
DE (1) DE3476974D1 (en)
ES (1) ES8702186A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666408A1 (en) * 1990-09-05 1992-03-06 Framatome Sa Device for expanding a tubular member
KR101223090B1 (en) * 2012-10-05 2013-01-17 극동일렉콤주식회사 Multi cable transit for electromagnetic interference shielding end packing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159564A (en) * 1978-04-14 1979-07-03 Westinghouse Electric Corp. Mandrel for hydraulically expanding a tube into engagement with a tubesheet
GB2069387B (en) * 1980-02-14 1983-11-16 Northern Eng Ind Apparatus for expanding tubular members
US4414739A (en) * 1980-12-19 1983-11-15 Haskel, Incorporated Apparatus for hydraulically forming joints between tubes and tube sheets
US4407150A (en) * 1981-06-08 1983-10-04 Haskel Engineering & Supply Company Apparatus for supplying and controlling hydraulic swaging pressure

Also Published As

Publication number Publication date
ES539069A0 (en) 1986-12-16
EP0148454B1 (en) 1989-03-08
DE3476974D1 (en) 1989-04-13
EP0148454A3 (en) 1985-11-06
EP0148454A2 (en) 1985-07-17

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19960603